Curate, connect, and discover
Spoilers up to chap 303 of tsctir
When you're on your Enneagram bs & realize that Sung Hyunjae is self-pres/sexual 7 & Han Yoojin is self-pres/sexual 2.
...the fact that they both prioritize self-pres instinct while wielding the sexual instinct second would explain some of the odd chemistry in their semi-transactional relationship. They both are, or at least were, using their growing connection with the other as a tool to satisfy their own needs, and both of them see this as reasonable and fair because they know the other is doing the same thing.
Hyunjae only rejects the chemistry between them when his dominant instinct is threatened... needing to risk his arm to help everyone get out of the Japanese dungeon bcuz of whatever funky stuff Yoojin's got going on. He literally says to Song Taewon, after running away from Yoojin, in ch.296:
“No matter how much I like him, I come first. He’s mine to the end, and while he’s something I treasure, the one I value is myself.”
No wonder dude spirals out of control until he's literally contemplating wiping Yoojin off the face of the planet. he's a pleasure-seeking sp7 that ensures the satisfaction of his needs by building interpersonal alliances, & the passionate, dreamy energy of his sx7 instinct serves that end. if the focus of his current passion is abt to risk his survival, if he's gonna have to start making actual sacrifices, then it makes sense that he'd think abt cutting his losses. but... he doesn't want to kill him. cuz he liiiikes him. so he just ghosts him lol
& Yoojin's reaction to it is so freaking funny dude. he's like a crazy ex Hyunjae broke up with over text. & that makes sense, too, bcuz he's beginning to actually care about Sung Hyunjae in a non-transactional way, so Hyunjae just up and ghosting has to absolutely trigger the 2's fear of being unloved and abandoned, like it did when he thought Yoohyun abandoned him pre-regression. and because 2's are hiding insecurity and entitlement for love & attention behind a veneer of altruism, which wells into anger & resentment if they don't get the love that they're due, Yoojin literally threatens to blow up his house if he doesn't respond to him. and does, like, a 24 hour death countdown before barging into Sung Hyunjae's house when he STILL hadn't responded to his texts lololol